Method of and apparatus for corner stitching



Feb. 4, 1930. H. R. BLISS ET AL 1,745,596

METHOD OF AND APPARATUS FOR CORNER STITCHING Fil'ed March 8, 1928 I NV EN TORS lie/barf A? 5/35,

Howard 6: Al/en ATTORNEY.

Patented Feb. 4, 1930 i UNITED STATES PATENT OFFICE 'HERBERT R. BLISS AND HOWARD G. ALLEN, OF NIAGARA FALLS, NEW YORK, AS-

SIGNORS '10 H. R. BLISS COMPANY, 1110., OF NIAGARA IALLSQNEW YORK, A COB- PORA'IION OF -NEW YORK METHOD OF AND APPARATUS FOR CORNER STITCHING- Application filed March 8, 1928. Serial No. 259,962.

This invention relates to a method of and apparatus for corner stitching. More specifically, the invention has to do with the securing together, by means of one or more corner stitches, two members which come together at an angle to form a corner, such as the walls or sides of a fiber container. It has been proposed to secure the corner members of a box by positioning the corner members angularly with respect to each other, which is the proper angle of the corner, and then driving a stitch or stitches through the members while in this position. Difficulties have arisen with this because the stitches are driven through the material at an angle, and it is also difficult to properly turn over orfclinch the ends of the stitch. According to the present invention a stitch is taken through the corner members which is in the nature of an ordinary wire stitch,and after the stitch is completed, the stitch, together with the corner members, are shaped to effect a corner. Q

In the accompanying drawings:

Fig. 1 is a perspective view of a stitching head and cooperating anvil for forming a stitch in accordance with the invention.

Fig. 2 is a front elevational view showing the formation of the anvil, the stitcher head and some of the stitcher head mechanism with the parts in position that they assume just before the formation of the stitch and before the driver comes down, and also showing the position in which the corner members.

are placed ready to be stitched.

Fig. 3 is a view similar to F1gJ2 showlng how the ends of the material to be stitched are bent down just prior to taking the sticthes.

Fig. 4; is a view similar to Figs. 2 and 3, and showing the completed stitch.

Fig. 5 is a similar view showing the formation of the corner. I

Fi 6 is a somewhat diagrammatic view showlng the mechanismfor operating the corner forming device.

Fig. 7 is a perspective view of a cover for a container whichis formed by the use of these corner stitches.

A portion of a stitching machine is shown at 1. This portion is in the nature of the usual housing, carrying at its forward end a stitcher head 2. The mechanism of this stitcher head can be of any desired construction except as to the details shown in Figs. 2, 3, and 4. An anvil arm 3 is positioned below the stitcher head and is provided with im znvil 4 for cooperation with the stitcher The shape of this anvil is shown in Fig. 2

and the upper edges thereof are cut at an angle as at 5. Ordinarily the corner to be formed is one which is a right angle, and accordingly the slanting faces 5 will form substantially a right angle if extended to the point of juncture. The stitcher head 2 acts as a suitable guide within which reciprocate the usual former and driver mechanism. The former pieces 8 and 9 have at their lower ends beveled surfaces corresponding generally to the slanting surfaces 5 .of the anvil. Cooperating with the former pieces 8 and 9 is any one of the usual mechanisms which operate to sever a length of wire from a supply of the same, and place it in the, grooves within the adjacent edgesof the formers as at 10. The driver of the mechanism is shown at 12, and the lower end of the driver is recessed in the form ofan inverted V. This driver part 12 operates in the usual manner with the wire 10 which is guided between the formers, forc-' ing the wire ahead of it and down through these grooves or guides and drives the legs of the staple throu h the fiber members which are to be secure together. The legs of the stitch or staple are turned over or clenched by the anvil in the usual manner. The usual foot or stitch supporting member is shown at 6 and the lower surface is' preferably curved as at 8, and which is arranged to bend the parts to be stitched ust before the stitch is taken.

A cover 15 for a container is shown in Fig. 6. This cover is made of suitable fiber board or paper board and it is provided with sides 16 formed by down turned flaps of the fiber with each corner secured together by a corner stitch 10.

To place a corner stitch at one of these corners, two of the members 16 are placed head in a position substantially as shown in Fig. 2. While in this position the former a stitch from the anvil so as not to bend slide and the driver operate respectively, to form and support the stitch, and drive the stitch through the two members 16, as is shown in Fig. 4. Just prior to the taking of the stitch, the foot 6 bends the sides 16 down substantially as shown in Fig. 3. It will be noted that the stitch is completely clinched while the body of the stitch, or that portion of the stitch lying between its bent ends, is substantially straight and while the two abutting fiber members are in substantial alignment.

After the stitch is thus formed and completed the angle is formed. This is accomplished by means of a punch or. breaker 20 slidably carried in the anvil arm which is grooved as at 21 for the purpose. The upper end of this. unch is pointed in form with an angle whic corresponds approximately to the angle of the corner to be formed which ordinarily is a right angle. This punch is moved upwardly while the driver ihnear its lowermost positlon, as shown in Fig. 4. Preferably the driver has moved up slightly. In actual practice thedriver is movin up at this time but the punch is moved up aster than the driver to engage the stitch and stitched walls. This frees the clinched ends of time t e body of the stitch adjacent the clinched ends. The punch drives against the stitch and the fiber members connected thereby drive them into the recessed shaped end of the driver, thus giving to the stitch the angle desired.

The mechanism for effecting this action of the/punch is shown in Fig. 5. g In this figure a shaft 22 extends outwardly through the housing 1 and is rotated for the purpose of.

actuating the stitcher head. Upon this shaft is a cam 23 which engages a roller 24, which in turn acts through a connecting link 25 to actuate a bell crank 26. A rod 27 rojects outwardly from this bell crank, ans at its opposite. end is connected to a bell crank 28 which in turn is operatively associated with the punch 20. A compression-spring 29 acts to keep the roller 20 in contact with the cam and the punch in lowermost position. The operation is clear, and as the cam 23 moves the link 25 downwardly the bell crank 26' is rocked which results in a rocking of the bell crank 28 and the lifting of the punch 20..

It is to be noted that when the corner 'is formed by the punch, the stitch is placed under tension and the abutting fiber members are somewhat compressed, since the stitch is vspace is left so that tension upon the stitch is not too great when the corner is formed 4 this is thecustomary corner formed. It is entirely feasible, and within the spirit of this invention, to form corners at any other angle,

it being necessary onlyto change the angular a formation of the parts mentioned.

Claims: I 1

1. The method of corner stitching, which comprises forming a straight stitch into angularly disposed pieces of the work, and then bending the stitch into the angle of the corner.

2. The methodof corner stitching, which comprises forming astraight wire stitich into angularly disposed pieces of the work substantially the sameas a customary wire stitch,

and then bending the stitch into the angle of the corner.

, 3. The method of, corner stitching, which comprises stitching two angularly disposed pieces of material together with a straight wire stitch, and then bending the stitch into the angle of the corner and causing the two pieces of material to meet each other atthe same angle.

4. The method of corner stitching fiber or like articles, which com rises placing two separate sections of the fiher in substantially straight alignment with theiredges in substantially abutting relation and somewhat angularly disposed, driving a straight wire stitch through the members, and then bending the-stitch into the angle of the corner and causing the two fiber members to meet each other at the same angle.

5. The methodof corner stitching fiber or like articles, which com rises placing two separate sections of the fiher in substantially strai ht alignment with their edges in substantlally abutting relation and somewhat angularly disposed, driving a straight, wire.

through the members with the bodyof stitch the stitch bridging the edges, and then bending the body of the stitch into the angle of the corner at substantially the point where the stitch bridges the edges.

6. The method of corner stitching fiber containers or the like, which comprises placing' two separate fiber members in substantially straight alignment with their-edges in substantially abutting relation and somewhat anon the outside'of the angle and the fiber memgularly disposed Placing a straight Stitch bers on the inside. In formin the stitch, through the memhers h them W 1th therefore, it is desirable that t e two fiber the y of the stlteh hl'ldglhg the ahuttmg members he placed in 'osition to be stitched g and then pp y g Pressure to the body so that th are slig tly spaced apart, as of the stitch andlthe fiber members substanshown in ig. 2. By doing this, suflicient tially at the point of their abuttlng edges to give the stitch and the said members the angle of the corner.

7. A wire stitching machine comprising in combination, a stitcher head, ananvil for cooperating with the stitcher head to. form a wire stitch, and means for engaging the body of the stitch substantially at its center line to deform the body of the stitch into angle form.

8. A wire stitchin machine comprising a stitcher head, an anv1l for cooperation therewith adapted to form a substantially customary wire stitch having a strai ht body portion with clenched en in com ination with means for bending the body of the stitch into an le form,

A wire stitching machine comprising in combination, a stitcher head provided with a driver havin a V shaped recess, an anvil, a

unch slidab y mounted in opposition to the river and having an end relatively pointed corresponding to the recess in the driver, and means for raising the punch to engage a stitch between the punch and the driver to shape the same.

10. A wire stitching machine comprising in combination, a stitcher head having a driver with a V shaped recess and havin a former slide and a guide with beveled e ges correipondin su stantially to the angle of the shape recess, an anvil havingsides which are beveled to correspond to the V sha ed recess and beveled portions of the stitc er head and a punch mounted in ocpposition to the driver and having a points end corresponding to the V shaped recess of the driver,

and means for raising the punch to engage a stitch between the punch and driver.

-11. The method of corner stitching fiber board containers or the like which comprises disposing two fiber board members in an anular relation with their edges in close proximity, bending the edge portions thereof into an approximate alignment with the edges substantially abutting, driving the legs of a stitch through the respective bent edge portions, clinching said legs while leaving the body of the stitch subtsantially straight, and then bending the said bodyof the stitch into an angle substantially the same as the angle of disposition of the said 'two fiber board members.

In testimony whereof we aflix our signatures. v

HERBERT R. BLISS. HOWARD G. ALLEN. 

